Ошибка в том что после we глагол не должен оканчиваться на es правильно вот так we go
1. have liked
2. was
3. bought
4. have you known
5. have known
6. did you get
7. have been; got
Who bought a new book about Moscow?
What did I do?
What did I buy?
Which book did I buy?
What about was a book which I bought?